Finding the Fourth Proportional to 5,573.18, 7,688.10 and 3,780.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,573.18 : 7,688.10 = 3,780.05 : x
2. Step 2: Convert to fraction form
   5,573.18/7,688.10 = 3,780.05/x
3. Step 3: Cross multiply
   5,573.18x = 7,688.10 × 3,780.05
4. Step 4: Simplify right side
   5,573.18x = 29,061,402.41
5. Step 5: Solve for x
   x = 29,061,402.41/5,573.18
6. Step 6: Final answer
   x = 5,214.51